Finding the Fourth Proportional to 87,119.08, 130,851.42 and 74,634.28
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Solution
The fourth proportional to 87,119.08, 130,851.42 and 74,634.28 is: 112,099.46
Step by Step Solution
- Step 1: Write the proportion equation
87,119.08 : 130,851.42 = 74,634.28 : x - Step 2: Convert to fraction form
87,119.08/130,851.42 = 74,634.28/x - Step 3: Cross multiply
87,119.08x = 130,851.42 × 74,634.28 - Step 4: Simplify right side
87,119.08x = 9,766,001,518.68 - Step 5: Solve for x
x = 9,766,001,518.68/87,119.08 - Step 6: Final answer
x = 112,099.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.